"Visible light of wavelength 6000 $\times$ 10-8 cm falls normally on a single slit and produces a diffraction pattern. It is found that the second diffraction minimum is at 60o from the central maximum. If the first minimum is produced at $\theta$1, then $\theta$1, is close to :"

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"For 2^nd minima

$\sin \theta = {{2\lambda } \over d }$

$\Rightarrow$ $\sin 60^\circ = {{2\lambda } \over d}$

$\Rightarrow$ ${\lambda \over d} = {{\sqrt 3 } \over 4}$

For 1^st minima

$\sin {\theta _1} = {\lambda \over d}$ = ${{\sqrt 3 } \over 4}$

$\Rightarrow$ ${\theta _1} =$ 25^o"

Visible light of wavelength 6000 $\times$ 10^-8 cm falls normally on a single slit and produces a diffraction pattern. It is found that the second diffraction minimum is at 60^o from the central maximum. If the first minimum is produced at $\theta$₁, then $\theta$₁, is close to :

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Visible light of wavelength 6000 $\times$ 10-8 cm falls normally on a single slit and produces a diffraction pattern. It is found that the second diffraction minimum is at 60o from the central maximum. If the first minimum is produced at $\theta$1, then $\theta$1, is close to :

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Visible light of wavelength 6000 $\times$ 10^-8 cm falls normally on a single slit and produces a diffraction pattern. It is found that the second diffraction minimum is at 60^o from the central maximum. If the first minimum is produced at $\theta$₁, then $\theta$₁, is close to :